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MARK V – MOUNTED OVERARM PIN ROUTER 555970
27
Step 6: Remove your completed project
from the fixture, attach a new workpiece
blank and repeat steps 4, 5 and 6.
NOTE
• Apply a coating of furniture PASTE wax
to the Guide Pin, the bottom of your fix-
ture and the insides of the grooves to
ease the movement of the fixture through
your cuts. Be sure to buff out the wax and
not leave blobs in the grooves that could
mix with sawdust and inhibit proper fix-
ture movement.
• When guiding the fixture over the pin,
always move in a counter-clockwise di-
rection,
against the rotation of the bit and
maintain a steady force against the same
groove wall (push in against the inner
wall — or pull out against the outer wall)
throughout your cut. Don’t let the fixture
shift from wall-to-wall against the Guide
Pin.
Routing over a pin with
a clamp-in fixture
With a clamp-in fixture (See Fig 18), your
workpiece is secured to the non-grooved
(particleboard) side of the fixture by a mov-
able clamp bar. The fixture is then flipped
over and the grooves (in the shape of your
intended finished piece) in the laminate side
of the fixture are traced over the Guide Pin.
As with a screw-in fixture, this process trans-
fers your design exactly to the workpiece
you’ve mounted to the opposite (or particle-
board) side of the fixture.
Clamp-in fixtures take longer to make than
screw-down fixtures and function much like
screw-down fixtures, except that the
workpiece is clamped into rather than
screwed to, the fixture. As a result, they of-
fer the advantages of greatly reduced
workpiece insertion and removal times and
not damaging any surface of the workpiece.
Clamp-in fixtures are best for projects where
only internal cuts are made and two oppos-
ing sides of the workpiece can be left uncut
and used to clamp against. (The clamp and
fixture could be designed to follow a profile
of a workpiece.)
Step 1: Screw the appropriate sized guide
pin into the center hole of the Router Table
Insert and align it with the same sized router
bit, as explained previously.
Step 2: Drop the fixture groove over the
Table Pin, turn on your router motor, and
set your final depth-of-cut so the bit just
barely breaks through the surface of the par-
ticleboard side of your fixture. Turn off your
router motor.
Step 3: Clamp your workpiece firmly to the
fixture.
Figure 18. A typical clamp-in fixture.